CVSS v3.1 Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS Prediction
Documented as more likely to be exploited than 97.4% of known CVEs.
Sep 25, 2025
Sep 26, 2025
Threat Analysis
Cisco Secure Firewall Adaptive Security (ASA) Appliance and Secure Firewall Threat Defense (FTD) Software VPN Web Server contain a missing authorization vulnerability. This vulnerability could be chained with CVE-2025-20333.
Remediation Directive
The KEV due date refers to the deadline by which FCEB agencies are expected to review and begin implementing the guidance outlined in Emergency Directive (ED) 25-03 (URL listed below in Notes). Agencies must follow the mitigation steps provided by CISA (URL listed below in Notes) and vendor’s instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available.
External Intelligence
CISA Advisory
https://www.cisa.gov/news-events/directives/ed-25-03-identify-and-mitigate-potential-compromise-cisco-devices
CISA Advisory
https://www.cisa.gov/news-events/directives/supplemental-direction-ed-25-03-core-dump-and-hunt-instructions
CISA Advisory
https://www.cisa.gov/eviction-strategies-tool/create-from-template
https://sec.cloudapps.cisco.com/security/center/resources/asa_ftd_continued_attacks
https://sec.cloudapps.cisco.com/security/center/resources/asa_ftd_continued_attacks
https://sec.cloudapps.cisco.com/security/center/private/resources/asa_ftd_continued_attacks#Details
https://sec.cloudapps.cisco.com/security/center/private/resources/asa_ftd_continued_attacks#Details
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-webvpn-YROOTUW
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-webvpn-YROOTUW
National Vulnerability Database
https://nvd.nist.gov/vuln/detail/CVE-2025-20362